Hiya!
First off, welcome! I hope you find our community to be a help to you.
I think it's safe to say most of us know those feelings and know how much they suck. Medication can be a crapshoot sometimes (8 or 9 for me over the course of 5 years), but once you find a med or med combo that works... best feeling in the world! Definitely check out the Genesight article if you haven't already.
I can only speak for myself obviously, but the one thing that seemed to get me through my darkest days was sheer, unadulterated, 4 year old stamping their feet screaming "NO!!!" stubbornness. Once I realized what I wanted, I just kept telling myself, "I want this. I need this. I deserve this. I will achieve this and God help anyone who stands in my way!"
I can't say I always get there, but I try. I can't say it isn't exhausting, because it often is. It feels like a mountain climb many times, but the summit is definitely worth it.